// Copyright 2007-2010 Comdiv (F. Sadykov) - http://code.google.com/u/fagim.sadykov/
// Supported by Media Technology LTD 
//  
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//  
//      http://www.apache.org/licenses/LICENSE-2.0
//  
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// 
// MODIFICATIONS HAVE BEEN MADE TO THIS FILE
using Comdiv.Conversations;

namespace Comdiv.Persistence{
    public class DefaultSessionTransactionSupport : IConversationTransactionImpl{
        #region IConversationTransactionImpl Members

        public void Start(IConversation conversation){
            lock (this){
                foreach (var s in AutomativeCurrentSessionContext.GetAllCurrentSessionsForConversation(conversation)){
                    if(!s.IsOpen){
                        s.Reconnect();
                    }
                    if (s.Transaction == null || !s.Transaction.IsActive){
                        s.BeginTransaction();
                    }
                }
            }
        }

        public void Commit(IConversation conversation){
            lock (this){
                foreach (var s in AutomativeCurrentSessionContext.GetAllCurrentSessionsForConversation(conversation)){
                    if (s.Transaction != null && s.Transaction.IsActive && !s.Transaction.WasRolledBack){
                        s.Flush();
                        s.Transaction.Commit();
                    }
                }
            }
        }

        public void Rollback(IConversation conversation){
            lock (this){
                foreach (var s in AutomativeCurrentSessionContext.GetAllCurrentSessionsForConversation(conversation)){
                    s.Clear();
                    if (s.Transaction != null && s.Transaction.IsActive && !s.Transaction.WasCommitted){
                        s.Transaction.Rollback();
                    }
                    
                }
            }
        }

        #endregion
    }
}